Postgres supports another handy command that can be executed from any interface like psql or pgAdmin. Use the SELECT command with the “information_schema” to get the table’s structure: SELECT*FROMinformation_schema.columnsWHEREtable_schema ='public'ANDtable_name ='emp_bio'; In this example, ...
3. Table Column Check in MSSQL Theinformation schemaenables users to work with database metadata in MSSQL. To support this, the DBMS stores the database structure and many other aspects of the database information: table names table schema table types others Thesqlcmdutility enables users to ...
If you’ve been developing in SQL Server for any length of time, you’ve no doubt hit this scenario: You have an existing, working query that produces results your customers or business owners say are correct. Now, you’re asked to change something, or perhaps you find out your existing ...
) as "MAX value" from INFORMATION_SCHEMA.COLUMNS a inner join SYS.objects b on a.TABLE_NAME=b.name inner join SYS.IDENTITY_COLUMNS c on b.object_id=c.object_id where COLUMNPROPERTY(object_id(a.TABLE_SCHEMA+'.'+a.TABLE_NAME), a.COLUMN_NAME, 'IsIdentity') = 1 and a.COLUMN_NAME=c...
Here’s what I’ll show you in this post: Example code to check if an index exists using OBJECT_ID. The code is simpler, but it requires a shared schema lock on the table you’re checking. Example code to check if an index exists just using joins. This uses less locking, but is ...
is displayed and we can now select the table we want to copy, and the database we want to copy to. We can also specify the name of the copied table and the schema. By default the data will also be copied to the new table, but you can uncheck theCopy Dataoption if you want to...
This finds 99.99% of all errors. What it cannot find is corruption that involvesonlythe data file (which is very unusual). If you want to check a table, you should normally runmyisamchkwithout options or with the-s(silent) option. ...
IF EXISTS ( SELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE table_name = 'Employee' AND column_name = 'LastName' ) PRINT 'Column- LastName Exists' ELSE PRINT 'Column- LastName doesn''t Exists' SQL Copy For more information on INFORMATION_SCHEMA.COLUMNS , please refer to Microsoft documentati...
SQL 2005+ EXECUTE master.sys.sp_MSforeachdb 'USE [?]; if exists(select * from INFORMATION_SCHEMA.tables where TABLE_TYPE=''BASE TABLE'' and TABLE_NAME=''DB_BACKUP_LOG_T'') begin print ''exist in '' + db_name() end' SQL 2000 ...
SQL Query to return the data? 1 SELECT TABLE_NAME FROM DBName.INFORMATION_SCHEMA.Tables WHERE TABLE_NAME='Article'How do I check this in C#?As for how you check that in C#? You just make sure the Row count returned from the query is 1. See this article I have already posted. How ...